My testresults:
unpatched ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nand read 0x20000000 0x00100000 0x03000000
no problem
nand write 0x20000000 0x00100000 0x00c00000
no problem
nand write 0x20000000 0x00100000 0x00d00000
the watchdog will reset the processor
patched ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nand read 0x20000000 0x00100000 0x03000000
no problem
nand write 0x20000000 0x00100000 0x07f00000
no problem
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
So, reading was never a problem, only writing.
And that is fixed now!
Thanks!
On 02/03/2011 01:23 AM, Scott Wood wrote:
> Poke the watchdog in a variety of looping constructs, which could take
> a long time to complete.
>
> Signed-off-by: Scott Wood<scottw...@freescale.com>
> ---
> Jaap, does this resolve the watchdog problems you were seeing?
>
> drivers/mtd/nand/nand_base.c | 6 ++++++
> drivers/mtd/nand/nand_util.c | 2 ++
> 2 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
> index 70c0593..b9bd394 100644
> --- a/drivers/mtd/nand/nand_base.c
> +++ b/drivers/mtd/nand/nand_base.c
> @@ -1156,6 +1156,8 @@ static int nand_do_read_ops(struct mtd_info *mtd,
> loff_t from,
> oob = ops->oobbuf;
>
> while(1) {
> + WATCHDOG_RESET();
> +
> bytes = min(mtd->writesize - col, readlen);
> aligned = (bytes == mtd->writesize);
>
> @@ -1485,6 +1487,7 @@ static int nand_do_read_oob(struct mtd_info *mtd,
> loff_t from,
> page = realpage& chip->pagemask;
>
> while(1) {
> + WATCHDOG_RESET();
> sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd);
>
> len = min(len, readlen);
> @@ -1884,6 +1887,8 @@ static int nand_do_write_ops(struct mtd_info *mtd,
> loff_t to,
> memset(chip->oob_poi, 0xff, mtd->oobsize);
>
> while(1) {
> + WATCHDOG_RESET();
> +
> int bytes = mtd->writesize;
> int cached = writelen> bytes&& page != blockmask;
> uint8_t *wbuf = buf;
> @@ -2215,6 +2220,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct
> erase_info *instr,
> instr->state = MTD_ERASING;
>
> while (len) {
> + WATCHDOG_RESET();
> /*
> * heck if we have a bad block, we do not erase bad blocks !
> */
> diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
> index 8b4f738..5a6f7ae 100644
> --- a/drivers/mtd/nand/nand_util.c
> +++ b/drivers/mtd/nand/nand_util.c
> @@ -542,6 +542,8 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset,
> size_t *length,
>
> pages = write_size / pagesize_oob;
> for (page = 0; page< pages; page++) {
> + WATCHDOG_RESET();
> +
> ops.datbuf = p_buffer;
> ops.oobbuf = ops.datbuf + pagesize;
>
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